Upstream about:welcome page for Android.

chrome/chrome_browser.gypi

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
@@ skipping 4232 matching lines @@
         'browser/ui/webui/test_chrome_web_ui_controller_factory.cc',
         'browser/ui/webui/test_chrome_web_ui_controller_factory.h',
         'browser/ui/webui/theme_source.cc',
         'browser/ui/webui/theme_source.h',
         'browser/ui/webui/tracing_ui.cc',
         'browser/ui/webui/tracing_ui.h',
         'browser/ui/webui/uber/uber_ui.cc',
         'browser/ui/webui/uber/uber_ui.h',
         'browser/ui/webui/web_ui_util.cc',
         'browser/ui/webui/web_ui_util.h',
+        'browser/ui/webui/welcome_ui_android.cc',
+        'browser/ui/webui/welcome_ui_android.h',
         'browser/ui/window_sizer/window_sizer.cc',
         'browser/ui/window_sizer/window_sizer.h',
         'browser/ui/window_sizer/window_sizer_ash.cc',
         'browser/ui/window_sizer/window_sizer_aura.cc',
         'browser/ui/window_sizer/window_sizer_gtk.cc',
         'browser/ui/window_sizer/window_sizer_mac.mm',
         'browser/ui/window_sizer/window_sizer_win.cc',
         'browser/ui/window_snapshot/window_snapshot.cc',
         'browser/ui/window_snapshot/window_snapshot.h',
         'browser/ui/window_snapshot/window_snapshot_aura.cc',
@@ skipping 1257 matching lines @@
           'includes': [ '../build/jni_generator.gypi' ],
           'dependencies': [
             'android_jar_jni_headers',
           ],
         },
       ],
      },
     ],
   ],
 }